intel: Include address range check for SiP Mailbox
intel: Include address range check for SiP Mailbox

This patch modify current address range checker in SiP driver to also
accept input size.
Also, include said checker for SiP mailbox send command to ensure
referenced argument is within expected address.

Signed-off-by: Abdul Halim, Muhammad Hadi Asyrafi <66ad4c8fdef6f533a2e399df0c874daeacca5916@intel.com>
Change-Id: Ie0c3cac4c3d1a6ea0194602d9aa3541f5d9a3367

achingupta/arm-trusted-firmware,achingupta/arm-trusted-firmware